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Thread: high cya

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    bof's Avatar
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    high cya

    my cya is high and I need to replace a lot of water to bring it down. I replenish lost water at about halt a ton a day, will doing this also lower my cya though I assume a lot slower process.
    Living in Cyprus
    In ground overflow pool tiled 12m X 4m 19507 Us gals 16243 Imp gals
    1 Kw motor 15 cu m per min Sand filter
    I thought I saw the light at the end of the tunnel but it was just some PERSON with a torch walking toward me.
    I started out in life with nothing and I still have most of it left.

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    techguy's Avatar
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    Re: high cya

    Anytime you replace high CYA water with fresh water, you are lowering the CYA.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    bof's Avatar
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    Re: high cya

    Thanks
    Nice to have conformation, appreciate your input.
    Living in Cyprus
    In ground overflow pool tiled 12m X 4m 19507 Us gals 16243 Imp gals
    1 Kw motor 15 cu m per min Sand filter
    I thought I saw the light at the end of the tunnel but it was just some PERSON with a torch walking toward me.
    I started out in life with nothing and I still have most of it left.

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    Howell, NJ
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    Re: high cya

    Well, if the water you replace is lost to evaporation, that won't lower the CYA. Only if the water is drained or lost to splash out will it lower CYA.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    bof's Avatar
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    Re: high cya

    Thank
    I never thought of that.
    That means if the water level is low the cya will increase. And the when the pool is filled the cya decreases.
    But the cya does not evaporate.
    Got it.
    Living in Cyprus
    In ground overflow pool tiled 12m X 4m 19507 Us gals 16243 Imp gals
    1 Kw motor 15 cu m per min Sand filter
    I thought I saw the light at the end of the tunnel but it was just some PERSON with a torch walking toward me.
    I started out in life with nothing and I still have most of it left.

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